Question #1a598
2 Answers
Jan 31, 2018
Write equation using symbols x for first unknown number and x+1 for second unknown number, then solve.
Explanation:
Jan 31, 2018
Explanation:
#"let the two numbers be "x" and "y" then"#
#x-y=1color(white)(x)to(1);x>y#
#x+y=17to(2)#
#"adding equations "(1)" and "(2)" term by term "#
#"will eliminate y"#
#(x+x)+(cancel(y-y)^0)=(1+17)#
#rArr2x=18#
#"divide both sides by 2"#
#(cancel(2) x)/cancel(2)=18/2#
#rArrx=9#
#"substitute "x=9" into equation "(2)#
#9+y=17#
#rArry=17-9=8#
#"the two numbers are 8 and 9"#